230 OENEIS. By G. Weyjier. 



gusiarn. C. gustavi Sfgr. (= SatjTus g. aut.) should perhaps be placed here. Above dark smoke-brown with a 



long light brown macular stripe before the margm, in wliich are placed on the forewing a black eye-spot 

 before the apex and 1 or 2 small ones above the anal angle and also on the hindwing some black spots. The 

 fringes are a mixture of light and dark grey, chequered with black. On the under surface the fore'wing is 

 partly blackish, parti}' bro■^^^lish grey or light grey with 4 short, streak-like yellow-brown longitudinal stripes. 

 The ocellus iii the first of these stripes is larger than on the upper surface. The liindwing beneath is dirty 

 grey with sharply promment light grej^ veins. The yellow-bro'mi longitudinal stripes of the upper surface are 

 here only very short. In the Bolivian liighlands at 4000 m., discovered by Gust. Garlepp. 



20. Genus : Oeiieis Hbn. 



The chief distinguishing character of tliis genus is that none of the veins are swollen, but only the costal 

 of the forewing is much thickened at the base. Otherwise the neuration is similar to that of the preceding genus. 

 The costal margin of the forewing is fairty straight, the cell long and narrow, the apex produced, hence the 

 distal margm rather oblique. The qq of several species have a stripe of scent-scales behind the median on the 

 upperside of the forewing. The palpus is long, -ndth bristly hairs, the antenna short, with the club gradually 

 thickened. The butterflies are of medium or below the medium size and of yellow, yellow-brown or grej^-bro'mi 

 colour, nearly all with the luiderside of the hindwing light and dark marbled and bearmg a dark median band. 

 Their area of distribution embraces [the arctic zone and the higher mountains of the temperate zone in the 

 northern hemisphere, both in the Old and the New World. Some species are common to both. Concernmg the 

 Old World Oeweis cf. vol. I, p. 117— 121, pi. 40; also vol. IX, p. 311. 



evadensis. 0. nevadensis Fldr. (= gigas Btk., californica Bdv.) (50 e). The largest and most beautiful species 



of the genus. Recognizable by the reddish oclu-e-yellow ground-colour of both -ndngs. The scent-scale stripe 

 of the (J(J is very distinct. In the q either 1 or 2 eye-spots are present on the forewing above and beneath. 

 The second of these is placed in cellule 2. In the 5 there are usually 2 eye-spots, but sometimes 3, the third 

 placed in cellule 3. From California, Oregon, Washington and Vancouver Island. From 2000 to 7000 ft. — 

 iduna. iduna Edw. (50 f) is a somewhat larger and lighter form of gigas. The ground-colour is of a much lighter ochre- 

 yellow, especially on the hindwing, and also on the underside of the forewing. The bro\\ai striation on the under 

 surface of the hind-ndng is much finer, so that the white ground-colour stands out much more strongly. The 

 bro-rni dentate lines are thinner and the distal margm narrower. From the coast-districts of northern California. 

 — The egg is irregularly and shallowlj^ ribbed, with pale rings. It hatches in 9 or 10 days. The larva is rosy 

 ochre-j'ellow, with darker dorsal line and subdorsal stripes, between the two lighter longitudinal lines. On grass. 

 Concerning the pupa nothing is kno\vn, as Edwards did not bring the larvae to pupation. 



macouni. 0. macouiii Edw. Tliis interestmg species is quite like navadensis Fldr. in size, colourmg and markings, 



but is distinguished from it at once by the complete absence of the large brown scent-scale spot on the upper- 

 side of the forewing in the q , and further bj^ the presence of a broad dark brown median band on the underside 

 of the hindwing. The species has hitherto been found only in two localities in North America, being rather 

 common at Nepigon on the northern shores of Lake Superior in Canada, from the end of June to the middle 

 of July, m the damp, wooded grass-lands near the river of the same name. The second locality is Morley, Alberta, 

 at the eastern foot of the Rockj- Mountains, where the species was found by IVLvcoui^. — The larva is figured 

 by Holland and is 35 mm. in length. The head is rovmd with 4 vertical black Imes, the body has on the dorsum 

 several narrow dark longitudinal lines, at each side a broad subdorsal stripe and above the legs a dark lateral 

 stripe with a light one above it. It lives on grass. 



c7iry:m-<i. 0. chryxus Dbl . & Hew. (= ealsiis Saul d.) (50 f). Similar to nei;a(Ze?ms, but smaller, the forewing some- 



what more pointed, its costal margin marbled with light and dark, the distal margin in the q consists only 

 of a narrow brown marginal line, the scent-scale spot bro-miish grey. Forewing in (J and $ with 2 eye-spots 

 and a small black dot between them, hinch^-ing with a similar anal dot. On the under surface the anterior 

 half of the forewmg is finely striated with brown, and also the whole of the hindwing, on which 2 dentate stripes 

 enclose a broad dark median area. — The egg is whitish, the larva grey-brown with dark nebulous lines, the 

 pupa is rounded, anteriorly black-brown, posteriorly yellowish. The butterfly is widety distributed in the Rocky 

 Momitams from Colorado, where it is met with at elevations of 9 000 to 12 000 ft., to the Canadian provuice 

 of Alberta, where it occurs at from 4000 to 7000 ft. It fhes at the end of June and m July. Calais Sciidd., which 

 was described bj* the author as coming from Hudson's Bay, is now general^ regarded as a syiionym of chryxiis. 



ivalida. 0. Ivalida Mead. (55f). This species is easily recognized by the brownish grey colour of the forewing 



and the whitish grey hindwmg. A row of white-grey spots is placed before the distal margm of the forewing, 

 with a small ej^e-spot before the apex. The under surface is also almost entirely white-grej-. The costal margin 

 of the forewing is dotted with brown to the subcostal, then in the anterior part of the cell marbled with brow^l, 

 some brown streaks extending to the median. The hindwing is striated and marbled with brown with lines 



